291213520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280013}}^1$

素因数の和:280039

約数の個数: 40

約数和(自身を含む): 729156456

約数和(自身を除く): 437942936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 280013, 560026, 1120052, 1400065, 2240104, 2800130, 3640169, 4480208, 5600260, 7280338, 11200520, 14560676, 18200845, 22401040, 29121352, 36401690, 58242704, 72803380, 145606760, 291213520]

約数ペア:

[(1, 291213520), (2, 145606760), (4, 72803380), (5, 58242704), (8, 36401690), (10, 29121352), (13, 22401040), (16, 18200845), (20, 14560676), (26, 11200520), (40, 7280338), (52, 5600260), (65, 4480208), (80, 3640169), (104, 2800130), (130, 2240104), (208, 1400065), (260, 1120052), (520, 560026), (1040, 280013)]